Reenforcement for poles



G. B. SPRING REENFORCEMENT FOR POLES May 11 1926.

Filed (August 14, 1925 1 v w 0/ 9 a 9 ml .1

lnvenTor. Georg B. Spring" WWW AiTys. y

d ii

a one ir M n'nwron nrennanns, rrassaonuenrrs/ snr'onentannr non reruns.

hpplioation riled nngnct'l l, 1925. Serial No. 150,320,

and ther similar'poles After a wooden pole of this nature has been in use for several years it begins to show signs of weakness at the surface of the earth, this weakness being caused by the decry in the pole occasioned by the changes in the degrees of moisture to which the pole is subjected atthe surface of the earth.

It is an object of my present invention to provide an improved reenforcement for wooden poles which may be applied to the pole when. it begins to decay or to show signs of weakness and by means of which thelile of the pole can be materially lengthcne My improved reeniiorcement can, if desired, be applied to the pole when it is set so that it will at all times be operative to rceni'orce and strengthen the pole.

The reenl'orcing means embodying my invention comprises two or more reenforcing members each formed of two angle iron elements that are rigidly connected together to form a member having a general "it" shape in cross section, one leg oi each member resting against the pole and the other leg extending outwardly or radially from the pole.

The device also includes a plate situated. between the radial legs, one edge of which en ends beyond the legs that rest against t polsqand thus forms a rib that is embedded in the polc 'and the other edge of which extends beyond the radial legs or the angle iron and. forms an anchoring wing that is embedded in the soil and that serves to anchor the reenforciug membersin positio' 'lhese two members are clamped to the pole icy-means of a suitable clamping iron.

In order to give an understanding of my invention 1 have illustnated in the drawings selected embodiment thereof which Wlll now be described after which the novel lea tures will be pointed out in the appended claims. Fi

1 is a view illustrating my improved reeniorcing means in use for reenforcing a pole, a portion of one of the members bemg hrolren out to better show the construction; is a section on the line 22 Fig. 1; 3 is a section on the line 3-8, Fig. 1; Fig. l is a View of the gripping plate." in the drawin 1 indicates a wooden pole ouch as is used tor telegraph, telephone and other transmission purposes, said pole being set in the earth 2. The pole is illustrate'clas weakened by decay at the surface of the earth as shown at 3, this being a condition which frequently exists in. polesthat have been set for a few years My improved reenforcing means com prises two reenforcing means of special con struction which are adapted to be driven or Q55 set into theearth on opposite sides of the pole and then clamped to the pole. The reenforcmg members are indicated generally at l and 5. Each member is formed of two angle 1ron elements 6 and 7 which are rigidly connected together to form a structure having a general T shape in cross section. The legs 8 and 9 of the angle iron elements are adapted to rest against the pole and they are preferablycurve'd slightly to fit the curvature of the pole. The legs 10 and 11 extend outwardly in a radial direction.

Situated between the legs 10 and 11 is an anchoring plate 12, said plate and the legs- 10 and 11 being rigidly secured together by means of rivets 13 or other fastening de-' vices. The anchoring plate 12 is preferably considerably wider than the legs 10 and 11 and when in place the inner edge 14: thereof extends inwardly beyond the angle iron 95 members and thus forms a rib which is cmbcdded in the pole 1. Said anchoring plate 12 also extends outwardly beyond the angle iron members and it forms a relatively wide resisting surface which becomes hrmly embedded in the earth.

The reenforcing members will preferably be about six feet long although the length may vary according to the requirements.

When in use about two-thirds o'l' each memher will be embedded in the earth, the other third projecting above the earth.

Since one purpose of the anchoring plates 12 is afi'orde'd an increased anchoring surface in the earth it is not necessary that these plates should extend the full length of the angle iron members and I have accordingly illustrated them as extending from about the point where the reenforcing memhers emerge from the earth nearly to the bottom'thereof. At the lower end of each reenforcing member I will referably employ a gripping plate 15 w ich is secured between thelegs 10 and 11 by means of suitable rivets. member projects inwardly beyond the angle iron members and is serrated or toothed as The edge 16 of this grlpping H0 shown, the teeth becoming embedded in the pole and being of such a shape as to resist the upward movement or the reenforcing members. The lower ends of the reenforeing members are tapered or pointed as shown so as to enable them to more freely be driven into the earth at the side of the pole.

The reenforcing members are clamped o the pole by means of special clamping devices, which are described and claimed in my eo-pending application Serial No. 50,319, filed August 14, 1925. vice consists of a plate 17 having a plurality of holes 18 and two dogs 1!), each having a threaded end 20 adapted to extend through the radial legs 10 and ll of the angle iron members and to have a clamping nut 23 screw-threaded therethrough and alsohaving an inwardly-bent sharpcned end 21 adapted to enter one of the holes 18 of the plate 17 and to be driven into the pole.

In applying the reenforcing members to a ole which has already been set said mem- )BI'S may be driven in place at opposite sides of the pole after which the clamping memhere will be applied. This is done by insertin}; the threaded ends of the dogs through apertures in the radial legs of the angle iron members and screwing the clamping nuts partially onto said ends and then driving the pointed ends 21 of the dogs through the apertures 18 and into thepole after which the nuts 23 maybe tightened to rigidly clamp the reenforcing members to the pole. This clamping construction has the advantage that it is anchored tothe pole. and thus prevents the ole from twisting. Any twisting of the p0 e is also resisted by the ribs-14.

This device can be readily and inexpensively manufactured as the angle iron elements may be commercial angle iron which have bad one of their legs bent slightly to fit the curvature of the pole and the anchoring plateand gripping plate can be easily made from sheet iron or steel. V

26 indicates a filling plate which inserted between the legs 10 and ll ofthe angle iron above the anchoring plate 12;

The legs 10 and ll of the reenforcing member are shown as provided with aper tures 27 adjacent the lower end. 'llhcse would be used in case thereei itorcing memhers are up )lietl to the pole before it is set. Under such circumstances the clamping members would be employed to clamp the lower end of the reenforcing member to the pole as well as the upperend thus. clamping the reenforcing members at both ends. The holes 27provide means for applying the clamping dogs.

Each clamping decross section, one leg of each element adapted to rest against the pole and the other leg extending outwardly in a radial direction from the pole, an anchoring plate interposed between the radial legs one edge of said plate extending inwardly beyond the angle iron members to form a rib which is embedded in the pole and the other edge of said plate exteming outwardly beyond the radial legs and forming an anchoring surface which is embedded in the earth.

2. A reen'i'orcemcnt for poles comprising two reenforcing members adapted to be set into the earth at opposite sides of a pole, means for clamping said members to the ole, each mcmbe r comprising two angle iron elements rigidly secured together to form a rccnfm'cing member having a T shape in cross section, one legof each element adapt-- ed to rest against the pole and the other leg extending outwardly in a radial direction from the pole, an anchoring plate interposed between the radial legs, one edge of said plate extending inwardly beyond the angle iron members to form a rib which is embedded in the ole and the other edge of said plate oxlem ing outwardly beyond the radial logs and forming an anchoring surface which is embedded in the earth, said anchoring plate extending nearly to the bottom of the angle iron nu-mbcrs and a gripping plate between the angle iron members 'below the anchoring plate and provided with teeth adapted to have a gri 'iping engagementwith the pole, v I

3. A rveu'foreement for poles comprising two recnforcing members adapted to be set into the earth at opposite sides of a pole, mcansfor clam ing said members to the pole, each memiier comprising two angle iron elements'rigidly secured together to vform a 'reenforcing member having a T shape in cross section, one leg,' ofv each ole meat adapted tore/st against the pole and the other leg extending outwardly in a radial direction from the pole, an anchoring plate interposed between the radial legs,

said anchoring plate extending outwardly beyond said legs and forming an anchoring surfacc'which is embedded in the earth.

In testimony. whereof, I havesigned my 

